.rotation {
  transform: rotate(360deg);
  -webkit-transform: rotate(360deg);
  animation: rotation 20s linear infinite;
  -moz-animation: rotation 20s linear infinite;
  -webkit-animation: rotation 20s linear infinite;
  -o-animation: rotation 20s linear infinite;
}

@keyframes rotation {
  from {
    -webkit-transform: rotate(0deg);
  }
  to {
    -webkit-transform: rotate(360deg);
  }
}

@-webkit-keyframes rotation {
  from {
    -webkit-transform: rotate(0deg);
  }
  to {
    -webkit-transform: rotate(360deg);
  }
}
